The heroine (Shen Qingyue): A top modern information security engineer (Hongke), with an incredible IQ, rigorous logic, a calm personality with a little bit of complaints, and super strong mobility. After accidentally traveling through time, he became the "fake daughter" of the Hou family who was about to have his identity exposed and faced annihilation. And the true daughter who has returned with the glory of the "system" is eyeing her.
Male protagonist (Xiao Heng): Prince Jing (the emperor's son) was extremely powerful in the current dynasty and won the emperor's heart. He looks cold and dignified, but his mind is as deep as the sea and he has great insight. Although there was a nominal concubine in the backyard of the palace (a decoration/never close to him) who was stuffed by the emperor or political factors, he was extremely disgusted with the crowds in the inner house, kept himself clean, and did not get close to women. Because of the "wonderful skills" (gunpowder, return air stove, telegraph) and unique thinking displayed by the heroine that were far ahead of the times, I had a strong interest in exploring her, and was gradually attracted by her wisdom and tenacity.